Victorian terraces in South Croydon demand different foundation approaches than the newer developments near Waddon station. Getting the groundwork right from day one prevents those telltale cracks that plague so many properties across CR0.
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Foundation work in Croydon throws up unique challenges, from the London Clay that shifts beneath Selhurst's older streets to the chalk deposits found deeper in CR2. Local knowledge matters when you're digging beneath properties that have stood for over a century. The wrong approach leads to subsidence claims that insurance companies love to dispute.
Strip foundations suit most Croydon soil conditions, running 600-1200mm deep depending on tree proximity and ground composition. Raft foundations become essential where the clay proves particularly problematic - common near Wandle Park where seasonal moisture changes wreak havoc. Mini-piled solutions handle the trickiest spots, particularly useful for extensions on those narrow Victorian plots where access machines struggle to reach.
Thirty-eight years working Croydon's varied geology means recognising trouble before the digger hits it. Every foundation carries our structural engineer's calculations and Building Control approval as standard.
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Strip foundations for a standard 4x3m extension typically range £3,500-£5,500 including excavation and concrete. Challenging ground conditions or nearby trees can push costs toward £8,000, particularly in clay-heavy areas of CR7.
Daily operations cover all CR0, CR2 and CR7 postcodes, from the Purley borders down through central Croydon to Thornton Heath. Regular work takes us through South Croydon, Waddon, Selhurst and surrounding neighbourhoods.
Standard strip foundations take 5-7 working days from breaking ground to finished concrete. Complex piled foundations might stretch to three weeks, especially during wet months when dewatering becomes necessary.
Every foundation includes decade-long structural coverage backed by comprehensive professional indemnity insurance. Annual inspection reports document any ground movement, giving homeowners evidence for any future property transactions.
Underpinning often rescues failing Victorian foundations without full rebuilds. Mass concrete or mini-pile underpinning stabilises movement while preserving the original structure above - particularly cost-effective for Croydon's period properties.
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